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RHFS Product Guide

Colder Products Company Non-Spill Couplings

Colder NS4 non-spill coupling

Colder Products Company specializes in quick disconnect couplers for applications and markets that are best served by modern thermoplastic materials and new design strategies. In particular, the use of engineering polymers as a construction material extends the boundaries of usefulness to new applications involving aggressive or high purity fluids. NS4 Series couplings feature non-spill valves in a compact size, at a great price. Use the NS4 when even a few drops pose problems regarding safety, media cost or environmental regulations. These innovative couplings are lightweight, chemically resistant and easy to use. The nonspill design effectively eliminates spills, minimizes downtime and enhances operator safety.

Engineering Polymers

Anyone who has recently looked under the hood of a new car has seen the extensive use of engineering polymers. Weight reduction and improved strength and rigidity, as well as reduced cost, make modern polymers a natural fit for many industrial applications. In quick disconnect coupler design, the use of advanced engineering polymers makes it possible to achieve complex part geometries, meet required chemical compatibilities, and reduce cost when compared to traditional machined components. Additionally, the use of reinforcing additives can further improve the strength, rigidity and operating temperature range of thermoplastics. Expanding Fluid Handling Parameters In fluid handling applications, systems typically operate in the pressure range of vacuum to 120 psi. While non-spill valve technology is not new, recent design innovations and cost improvements bring flush face non-spill quick disconnect technology to applications whose budgetary restrictions prevented the use of a non-spill quick.

Molded vs. Machined Couplings

A critical design decision is the selection of molded vs. machined components. This is true for several reasons: First, the geometries of the valve and housing components are designed to optimize flow performance through the non-spill coupling. Second, complex geometry requirements can be produced through high-tolerance injection molding for a fraction of the price of machining the same components. Another benefit of the molded components is the integral terminations (i.e., NPT, hose barb, elbows, compression, etc.) that eliminate a potential leak point found in other couplings with secondary adapters. An additional advantage is the superior aesthetics and easy-to-use, ergonomic function offered by the molded shape of the plastic coupling.

One example of this is the application of softtouch overmold material to the exterior of the coupling. The benefits of this include improved impact resistance, a more ergonomic shape, and color keying.

Chemical Handling Applications

Internal components of non-spill coupling

Recently designed non-spill couplings (models NSH, CQG and CQN) offer a patented non-spill valve design that isolates the valve actuation springs from the fluid flow path. This design results in the metal-free flow path required in specific chemical handling applications where metal can act as a system contaminant. The o-ring seals separate fluid flow from the valve actuation springs. The benefit of this design feature is a chemically inert, high purity flow path. The result is a flush-face non-spill coupling that is well suited to high purity and chemical applications. Additionally, the CQN coupling is designed for ultra high purity applications, such as semiconductor manufacturing. With materials of construction including PTFE, perfluoroelastomeric o-rings and PTFE- jacketed springs, the CQN offers the same metal-free flow path with two degrees of separation between the fluid and any metals. The benefit of this second degree of separation between the fluid and any metal is peace of mind that the flow path maintains exceptional purity for the most demanding applications.

Industrial Applications

The Colder Products Company Industrial Non-Spill Couplings (models NS4, NS6 and NSH) are designed for low pressure fluid transfer applications up to 120 psi. In addition to offering extremely low spillage, the molded valves have balanced flow areas to achieve high flow performance in a compact size. When combined with a familiar and easy-to-use thumb latch, the non-spills offer users many new coupling options. Some of the many applications identified to benefit from the non-spill quick disconnect technology described in this white paper include:

Chemical Handling and Transfer—Personal Safety

The handling of hazardous chemicals is made safer through the use of nonspill coupling instead of a traditional coupling or fitting. By keeping the often dangerous and costly media inside the system, personal safety can be improved and costs reduced. Applications include: semiconductor manufacturing, institutional cleaning solutions, photo processing chemicals, plating solutions, and bulk chemical transfer.

Liquid Cooling of Electronics—System Safety

The heat density of electronics has risen to the point that traditional forced convection cooling is no longer sufficient. Liquid cooling is becoming the method of choice as cooling technology increases in efficiency and decreases in size. Cooler operating temperatures can also translate into significantly lower failure rates among electrical components. Applications include: Cooling PCs, servers, chillers, lasers, medical equipment, and chip testing equipment.

Ink Management—Convenience & Cleanliness

Whether ink is water-based, solvent-based or UV curable, spillage is always a problem. Like water-based inks, solvent-based inks leave a mess but can also have noxious fumes. Because UV inks only dry under exposure to UV light, small spills wiped up by rags continue to stay wet long after cleanup. By keeping the ink in the system, the media never gets into contact with users and eliminates the mess at the source. Applications include: Labeling equipment, wide format printing, high speed digital, and many more ink handling and transfer applications.